Determination of ultratrace ammonium, nitrite, and nitrate nitrogens by atmospheric pressure helium microwave-induced plasma emission spectrometry with gas generation technique
1982 ◽
Vol 142
◽
pp. 159-171
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1981 ◽
Vol 123
◽
pp. 329-333
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1977 ◽
Vol 79
(1-2)
◽
pp. 202-211
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1995 ◽
Vol 353
(2)
◽
pp. 156-161
◽